Part identity and what the SPDT contact form means at the panel
The Omron SS-5GL111-FD is a limit switch in the SS sub-miniature family carrying a single pole double throw (SPDT) contact form — one common terminal that switches between a normally open and a normally closed output, which is the form factor most control designers reach for when the PLC input needs both a presence and an absence signal from the same actuator position. An SPDT limit switch lands directly in the wiring scheme of a standard PLC discrete input module: the common ties to the field supply return, the NO contact feeds the input channel for normal-state signalling, and the NC contact can be used for a complementary path or a safety-style cross-check — one mechanical position, two electrical states.
The lifecycle record on file marks this part as current, meaning the manufacturer has not signalled a phase-out, last-time-buy window, or discontinuation on this specific code at the time the record was generated — a current entry keeps the BOM line on the standard sourcing path rather than the surplus or broker channel. Omron sub-miniature limit switches of this generation typically serve as position-feedback elements on tooling, packaging machinery, and small-format conveyor indexing stations, where the switch body sits on a bracket and the actuator arm is cam-actuated by the moving part of the machine — the panel-side integration is a bracket mount and a cable gland, not a DIN-rail slot.
Sourcing posture against the RFQ
Current-production Omron SS-5GL111-FD units are specified and quoted against the buyer's RFQ through independent distribution channels; pricing, lead time, and quantity breaks are confirmed at quote time against the BOM volume rather than held as a fixed shelf price.